Overwatch x Harry Potter
*Harry is Deadeye and the bullets Jesse/Cole uses are his magic. A sort of reincarnation/possession.
*Harry are Jesse/Cole are a Chimera twins. Jesse/Cole is the dominant/host twin, but Harry is still conscious. They have magic which Harry teaches Jesse/Cole to use, including Jesse/Cole's Deadeye.
*Various HP characters are reincarnated as Overwatch characters in the Overwatch timeline.
*Various Overwatch characters are reincarnated as HP characters in the HP timeline.
*Harry is Jesse/Cole's son. Jesse/Cole was still a kid when Harry was born (Ashe or some OC is the mother - past). Dumbledore stole him and gave him to the Potters.
*Jesse/Cole finds baby Harry and decides to keep him, regardless of Gabe's reservations.
*Blackwatch Harry.
*Lily and Petunia's mother was a Shimada. Lily and Petunia's mom faked her death so she could be with her lover, Lily and Petunia's father. She moved to England and took her lover's name after marriage, becoming an Evans. Lily, Petunia and their respective sons each have noodle dragons of their own. (Harry has three noodle dragons which is unheard of and a part of why Petunia hates Harry personally since she only has one. Harry names his dragons Sear, Sauté and Simmer. All three are black and grey/silver with red eye, yellow eye and red and yellow heterochronic eyes respectively.)
*Harry is a Shimada and is stolen by Dumbledore. He binds "Harry's" magic so he can't summon his dragons.
*The Shimadas' are a prominent magical family in Japan/the Shimada clan in divided into two branches: magical and non-magical.
(The magical branch of the family is the branch that is in charge of the clan as a whole. There is a complex hierarchy between the two branches and how they interact with each other including marriages.)
*Harry, as an adult (36 - 2076).
*16-year-old Harry becomes a staff member for Overwatch. Chef/Housekeeper.
*Harry owns a cafe/bakery that many of the Overwatch members like to frequent on their down times.
*Moira is Petunia and Lily's (Aunt/Cousin) from their mother's side. She is a half-blood and a Slytherin. She rejected Voldemort's offer to join his cause for her own ambitions.
*Moira is a muggle-born who started off trying to figure out why muggle-borns were born with magic in the first place and became a geneticist. Still a Slytherin.
*Moira is a pure-blood and related to the Evans via Petunia and Lily's mother.
*"Moira" is Moira's middle name which she prefers for personal and professional reasons. She is Petunia and Lily's eldest sister. O'Deorain is her husband's name.
*Harry is reborn/reincarnated as an advanced android style omnic (he looks human). His magic is infused into/becomes various abilities and energy-based attack and defense (bullets and shields). (Some abilities could be similar to what the androids from D:BH, primarily the RKs - analyze a situation or "evidence" and pre/reconstruct scenarios).
Built by Overwatch for Blackwatch, or built by Blackwatch behind Overwatch's back? Did someone else build him and for what?
*Harry and Jesse/Cole are twins.
*Harry is killed and is reborn as Jesse/Cole's twin; except they are a chimera and Harry is inside Jesse/Cole's head. The two of them can switch between who is in charge of the body at will.
*Overwatch (and Blackwatch) knows about magic. Or at least the higher-ups and select personnel do. This is because they are an international organization who answers (at least somewhat) to the UN directly. Overwatch being in the know of magic's existence becomes a necessity due to the muggle world becoming more and more technologically advanced and because of Voldemort. Many muggle-borns (mostly those who survived the first war with Voldemort), and some magical creatures and beings join Overwatch because of what it is, what they do/stand for and because they have a better opportunity to make a living for themselves than they ever would in the wizarding community. It's also the best opportunity to make a difference in the world as a whole.